betersen



v 2'Sheets-Sheet 1. E. A. C. PETERSEN.

(No Model.)

BAKERS OVEN.

No. 363,416. Patented May 24, 1887.

(No Model.) 7 2 Sheefs-$heet 2.

E. A. O. PETERSEN.

BAKERS OVEN. No. 363,416". Patented May 24, 1887" EDUARD A. G. PETERSEN, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF rricn.

TO HENRY PIPER, OF SAME PLACE.

BAKERS OVEN.

SPECIFICATION forming part of Letters Patent No. 363,416, dated May 24, 1887.

Application filed May 5, 1885.

To aZZ whom, it may concern:

Be it known that I, EDUARD A. 0. PETER- sEN, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Bakers Ovens, of which the following is a'specification, reference being had therein to the accompanying drawings.

This invention relates to the construction of bakers ovens, and is an improvement of the oven described in Letters Patent of the United States, No. 252,054, granted to me on January 10, 1882.

The invention-consists of the novel devices and combination of devices, hereinafter de scribed and specifically claimed.

In the accompanying drawings, Figure 1 represents a longitudinal vertical section through the central line of the oven. Fig. 2 is a crosssection on line22in Fig. 1; Fig. 3, a sectional plan on line 3 3 in Fig. 2; Fig. 4, a sectional plan on line 4 4 in Fig. 2, and Fig. 5 a sectional plan on line 5 5 in Fig. 2.

Like letters designate corresponding parts in all the figures of the drawings.

A denotes the fil6 0h21111b1,(tbh(3 grate, and B the ash-pit. b b are ascries of fines, and b b are return-fines, all of these fines being on the same plan parallel to each other and arranged underneath the hearth or baking-chamber, and the fines b and returnflues b communicate in the rear end through to chambers c c. The return-fines b I) communicate in the front end with vertical fines d d.

O is the hearth or baking-chamber, the ceiling of which may be supported 011 iron T- bars, as described in my former patent, and underneath this ceiling are arranged longitudinally a series of iron pipes, f and f, the pipes ff communicating with the vertical fines d d, and the return-fines f f, through rear Serial No. 161,442. (No model.)

communicating channel with the chimney D.

From each side of the fire chamber A a transverse flue, k, leads direct to vertical flues d, and each such flue k is provided with a trapvalve, Z, arranged to be operated by iron crankrods m, that are rigid with such valves and are projected through the front wall of the By opening these valves Z the hot gases k even. from the fire will follow the more direct course, and instead of first passing through the fines b b will be carried at once through fines (Z (Z to pipesf, which frequently will be desirable for certain bakings that require more heat from above than from below.

By the arrangement of carrying the gases to and from each stratum of fines thegases are re tained longer in the even before they are allowed to escape through the chimney, to give up their heat more thoroughly,aud thus economize in fuel.

I am aware that in ovens of this class fines above and below the baking-compartment have been used; also, that fines below the baking compartment and pipes within such compartments have been used, and also that flues closed by valves and communicati n g with other flucs situated below the compartment and extending the entire length of the same are not new, and thereforeIlay no claim to these sev eral arrangements; but

WVhat I claim is- A bakers oven having heating-fines b 1) below the hearth, iron flnes f f, placed underneath the ceiling of and within the bakingchamber, and fines h h above the bakingchamber, each stratum of such-fines being arranged to carry the gases to and fro, and the several series of flnes communicating through transverse and vertical flues,'in the manner substantially asand for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

EDUARD A. C. PETERSEN.

Witnesses:

W. J. Omenrr, Louis NoL'rINe. 

